Supersnelle erbijsommen en erafsommen tot 20
In de mix
|
1.
7 – 3 =
4
2
1
3
|
2.
3 + 6 =
3
2
1
9
|
3.
14 + 3 =
2
3
4
17
|
4.
16 – 14 =
4
3
1
2
|
|
5.
19 – 8 =
3
2
11
1
|
6.
18 + 0 =
2
18
4
3
|
7.
15 + 2 =
4
3
17
2
|
8.
5 – 0 =
5
2
3
1
|
|
9.
9 + 9 =
18
2
4
3
|
10.
6 + 2 =
1
8
3
2
|
11.
2 + 13 =
2
3
1
15
|
12.
15 + 4 =
19
4
3
2
|
|
13.
11 + 8 =
19
2
3
4
|
14.
6 – 4 =
4
1
2
3
|
15.
5 + 11 =
4
3
16
2
|
16.
5 + 7 =
3
12
2
1
|
|
17.
11 + 5 =
2
16
4
3
|
18.
19 + 1 =
4
2
3
20
|
19.
18 – 4 =
2
14
1
3
|
20.
16 – 4 =
2
1
12
3
|